Intelligent Automatic measurement, clear light button, large and clear LCD display, memory can store 90 days data, date / time function display, 7 x 5cm LCD display size, auto voice system, 30-280 mmHg pressure / ±5% pulse of reading / 40-199 pulse/min measurement range, 4 x AA batteries power source or AC power cord, 22-32 cm wide range cuff size.